Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52O02NE00006

Record: MDI52O02NE00006

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Matapesatakun Bay Area

Latitude: 51° 14' 56.19"    Longitude: -90° 32' 54.57"

UTM Zone: 15    Easting: 671087.89   Northing: 5680364.09    UTM Datum: NAD83

Resident Geologist District: Thunder Bay North

NTS Grid: 52O02NE

Point Location Description: C zone marked on map in file 52O/07SE-0014.

Location Method: Data Compilation

Access Description: The Hasaga C deposit is located approximately 34 km southwest of Pickle Lake. The deposit is about 1.1 km south of Bancroft Lake (a.k.a. Ben Lake) and about 960 m northeast of Matapesatakun Bay of Lake St. Joseph. Bancroft Lake and Matapesatakun Bay are suitable for float-equipped aircraft in the spring, summer and fall, and ski-equipped aircraft in the winter. Bancroft Lake is shallow with a soft, organic sediment bottom. It is not suitable for large aircraft. A network of diamond-drill roads lead south to the deposit area from the campsite on the south shore of Bancroft Lake.

Exploration History

August 1953: B. Ohman discovered interesting mineralization south of Bancroft Lake, then submitted some samples to Hasaga Gold Mines Ltd., for assay. Hasaga geologists visited the property and took channel and chip samples. Values of $6.58 over 31.25 feet and $25.85 over 8.5 feet (gold at 34.42 per ounce) were returned. Hasaga Gold Mines Ltd. subsequently optioned 45 claims from Ohman and his backers, the Koval family of Pickle Lake, in Sept. 1953. Sept.-Dec. 1953: Hasaga carried out line-cutting, trenching and diamond-drilling (7391 feet of ddh) on the optioned claims. Additional claims were staked. May 1954: Work resumed on the property and continued until Dec. 1954, at which time operations were suspended. During this time, Hasaga's exploration crew located at least five new showings on the property and completed 13,580 feet of diamond-drilling. Little work was conducted on the property between 1955 and 1975. During this time, Little Long Lac Gold Mines Ltd. acquired the Hasaga property. 1974: Little Long Lac Gold Mines Ltd. decided to re-examine the Hasaga property. A new grid was cut over the claim group and geological, ground mag, VLF-EM and IP surveys were carried out. 1987: Lac Minerals Ltd. conducted a major diamond-drilling program on the property. 1994: Barrick Gold Corporation acquired Lac Minerals Inc. and places the property into a wholly-owned subsidiary - Lac Properties. 1996: Moss Resources drilled 5 DDH, including 2 near this zone. 2010: Tri Origin Exploration Ltd. included the patented claim group in an airborne AEM survey. 2015: Tri Origin optioned the property from Barrick Gold Corporation and carried out mapping and sampling. 2017: Tri Origin Exploration carried out geological mapping and sampling.

Assessment Work on File

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Meen-Dempster

Geological Age: Neoarchean  

Geology Comments

Dec 07, 2005 (B Nelson) - Four main rock types underlie the Bancroft Lake area. In the north is a 1 to 2 km thick succession of mafic metavolcanics. Sage and Breaks (1982) tentatively interpreted deformed pillow structures within the succession as south facing. To the south of the mafic metavolcanic succession is a 1 to 3 km thick unit of predominantly intermediate to felsic metatuffs. The gold mineralization on the Hasaga property is hosted by the intermediate to felsic metatuffs. The mineralized zone consists of 1 to 10 percent disseminated pyrite in weakly silicified, dacitic metatuff. Only locally is the silicification strong enough to make the rock appear bleached and sericitic. The width of the mineralization is variable between 3 and 5 m, and it occurs over a strike length of approximately 100 m. The extent to which the mineralized section carried gold is not known.

Lithology

Mineralization

Mineralization Comments

Nov 07, 2016 (Andrew Tims) - The mineralized zone consists of 1 to 10 percent disseminated pyrite in weakly silicified, dacitic metatuff. Only locally is the silicification strong enough to make the rock appear bleached and sericitic. The width of the mineralization is variable between 3 and 5 m, and it occurs over a strike length of approximately 100 m. The extent to which the mineralized section carried gold is not known. Selected gold assay results from historic drilling include near-surface drill core intervals of 5.49 grams of gold per tonne (“g/t”) across 5.2 metres at 10.7 metres downhole, 11.66 g/t across 5.6 metres from 65.8 metres downhole, 4.11 g/t across 8.8 metres from 99.4 metres downhole and 5.14 g/t across 10.8 metres at 112.9 metres downhole.

May 29, 2020 (Therese Pettigrew) - Moss Resources’ DDH H-96-5 and -6 intersected Zone D, which is 135 m to the SW of and on trend with Zone C. H-96-6 returned 0.035 oz/t Au over 4.5 feet (1.2 g/t Au over 1.4 m) from an intermeidate lapilli tuff with 2-5% pyrite, pyrrhotite, and arsenopryite. DDH H-96-5 returned 0.068 oz/t Au over 4 feet (2.33 g/t Au over 1.22 m) from an intermediate to mafic metavolcanic with 3-6% pyrite and pyrrhotite (Assessment report 52O02NE0011).

Alteration Comments

Dec 07, 2005 (B Nelson) - Only locally is the silicification strong enough to make the rock appear bleached and sericitic.

Mineral Record Details

References

Map - Cat Lake-Pickle Lake, geological compilation series, Kenora and Thunder Bay districts

Publication Number: M2218 Scale: 1:253,440    Date: 1976

Author: Sage R.P., Breaks F.W., Troup W.R.

Publisher Name: Ontario Division of Mines

Location:

MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay

Publication Number: R207 Date: 1982

Author: Sage R.P., Breaks F.W.

Publisher Name: Ontario Geological Survey

Location:

Article - Sioux Lookout Resident Geologist's District - 1989

Publication Number: MP147.004 Page: 82  Date: 1997

Author: Janes D.A., Seim G.Wm., Storey C.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Precambrian geology, Muskegsagagen-Bancroft lakes area, District of Kenora (Patricia Portion)

Publication Number: M2507 Scale: 1:50,000    Date: 1986

Author: Stott G.M., Wilson A.C.

Publisher Name: Ontario Geological Survey

Location:

Mono - Mineral Deposits of the Central Portion of Uchi Subprovince, Volume 1, Meen Lake to Kesagiminnis Lake Portion

Publication Number: OFR5869 Page: 30-33  Date: 1993

Author: Seim G.Wm.

Publisher Name: Ontario Geological Survey

Location:

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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office